Steam generator



May 14, 1935. M. E. SMITH 2,001,437

' I STEAM GENERATOR Filed July 19, 1954 A TTQRNEYS.

Fa. 3x Y WMA@TW Patented May 14, 1935 UNITED STATES STEAM GENERATOR Mark E. Smith, Erie, Pa., assignor to Union Iron Works, Erie, Pa., a corporation of Pennsylvania Application July 19, 1934, Serial No. 736,005

5 Claims.

The present invention is designed to improve steam generators, particularly in connection with steam passages arranged in a steam discharge drum of the generator. Features and details of 5 the invention will appear from the specification and claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing as follows:-

Fig. l is a vertical section through the generator on the line l-l in Fig. 2. a

Fig. 2 a section on the line 2-2 in Fig. 1.

Fig. 3 a section on the line 33 in Fig. 1.

The generator has a frontdrum I, a rear drum 2, the rear drum acting as the discharge drum, and a lower drum 3'. Banks 4 and 5 of tubes connect the front drum with the lower drum 3. Water tubes 6 connect the front drum with the rear drum and steam tubes 1 connect the front drum with the rear drum. Tubes 8 connect the rear drum with the lower drum. These are arranged in the form of a typical three-drum boiler. Baflies l are arranged in the bank and extend upwardly forming a pass I I over the baiile between the top l2 of the furnace l3 and the top of the bafile. A baflie I4 is arranged between the bank 5 and the bank 8 so as to direct the gases downwardly from the bank 5 and upwardly into the bank 8.

A deflector plate 16 is arranged in the rear drum 2 below the steam tubes 1. superheater tubes I! lead from the rear drum just below the baflie l6. These superheater tubes I! lead into return loops l8 and these lead into return ends 35 I9 and the ends I 9 lead into a chamber 20 in the rear drum. The chamber 20 is formed by interior walls which are bolted at 22 to the drum shell, the shell forming one wall of the chamber.

Tubes 23 lead from the chamber 20 into a steam 40 collecting conduit 24 extending lengthwise of the rear drum 2. The steam collecting conduit has a discharge opening 25 which leads to the steam discharge pipe 26. This construction simplifies the arrangement of the connecting steam tubes and superheater tubes and the connections leading from the superheater tubes to the steam outlet and at the same time affords a very efficient arrangement.

What I claim as new is:-

1. In a steam generator, the combination of a discharge steam drum; circulating tubes leading to and from said drum; a chamber in the steam discharge drum; steam tubes leading through the drum shell into the chamber; a steam collecting conduit in the steam discharge drum; and tubes in the steam discharge drum connecting the chamber and the conduit.

2. In a steam generator, the combination of a discharge steam drum; circulating tubes leading to and from said drum; a chamber in the steam discharge drum, steam tubes leading through the drum shell into the chamber; a steam collecting conduit in the steam discharge drum; tubes in the steam discharge drum connecting the chamber and the conduit; and tube connections within the discharge drum between the chamber and collector conduit.

3. In a steam generator, the combination of a discharge steam drum; circulating tubes leading to and from said drum; a chamber in the steam discharge drum; a steam collecting conduit in the steam discharge drum; tubes in the steam discharge drum connecting the chamber and the conduit; and superheater tube connections leading from the discharge drum between the chamber and collector conduit and to the chamber.

4. In a steam generator, the combination of a dischargesteam drum; circulating tubes leading to and from said drum; a chamber in the steam discharge drum; a steam collecting conduit in the steam discharge drum; tubes in the steam discharge drum connecting the chamber and the conduit; steam tubes leading to the steam discharge drum between the chamber and the collector conduit; and superheater tubes leading from the steam discharge drum between the conduit and the chamber and returning to the chamber.

5. In asteam generator, the combination of a discharge steam drum; circulating tubes leading to and from said drum; a chamber in the steam discharge drum; a steam collecting conduit in the steam discharge drum; tubes in the steam discharge drum connecting the chamber and the conduit; steam tubes leading to the steam discharge drum between the chamber and the collector conduit; superheater tubes leading from the steam discharge drum between the conduit and the chamber and returning to the chamber; and a baille plate between the steam tubes and the openings leading to the superheater tubes.

MARK E. SMITH. 

